APPARATUS AND METHOD FOR ANALYZING FOOT PRINT OF A PLURALITY OF APPLIANCES IN A CIRCUIT NON-INTRUSIVELY AND MONITORING COMSUMPTION OF ELECTRICAL POWER OF THE RESPECTIVE APPLIANCES BY USING INFORMATION ON BOTH STEP-ON MOTIF AND STEP-OFF MOTIF ACQUIRED BY ANALYZING POWER PATTERN

摘要

The present invention relates to a method for analyzing power devices in a circuit using a non-invasive method, the method comprising: (a) analyzing power information supplied to the circuit so as to correspond to on- Obtaining power pattern information to be generated; (b) obtaining at least one motif information, which is information on at least one fingerprint, by classifying and grouping the power analysis information by the similar power pattern with reference to the obtained power pattern information; And (c) the power analysis apparatus analyzes power information supplied to the circuit during a predetermined operation state determination time to count the number of occurrences for each motif, and if the difference in the counted number is within a predetermined value range Determining a pair of specific motifs in which the power change value is symmetrical as information on the operation state of the specific power device among the individual power devices; The individual power devices in the circuit can be accurately discriminated through the pair of specific motifs corresponding to the on-off operation states of the individual power devices, and accordingly, Cost accounting, that is, different cost criteria for each application of the power equipment, can be applied to enable cost settlement for the entire power consumption.